Function report |
Source Code:kernel\kcov.c |
Create Date:2022-07-28 11:34:05 |
Last Modify:2020-03-12 14:18:49 | Copyright©Brick |
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Annotation kernel can get tool activity | Download SCCT | Chinese |
Name:kcov_ioctl
Proto:static long kcov_ioctl(struct file *filep, unsigned int cmd, unsigned long arg)
Type:long
Parameter:
Type | Parameter | Name |
---|---|---|
struct file * | filep | |
unsigned int | cmd | |
unsigned long | arg |
677 | struct kcov_remote_arg * remote_arg = NULL |
681 | If cmd == KCOV_REMOTE_ENABLE Then |
682 | If Get a simple variable from user space(remote_num_handles, (unsigned__user * )(arg + offsetof(structkcov_remote_arg, num_handles))) Then Return -EFAULT |
685 | If remote_num_handles > KCOV_REMOTE_MAX_HANDLES Then Return -EINVAL |
689 | remote_arg = memdup_user((void__user * )arg, remote_arg_size) |
690 | If IS_ERR(remote_arg) Then Return PTR_ERR(remote_arg) |
692 | If Size of handles array != remote_num_handles Then |
693 | kfree(remote_arg) |
694 | Return -EINVAL |
696 | arg = remote_arg |
701 | res = kcov_ioctl_locked(kcov, cmd, arg) |
704 | kfree(remote_arg) |
706 | Return res |
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